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Characterization of products obtained by acid leaching of Fe-bentonite

Published online by Cambridge University Press:  09 July 2018

J. Madejová ,
S. Andrejkovičová ,
J. Bujdák ,
A. Čeklovský ,
J. Hrachová ,
J. Valúchová  and
P. Komadel
J. Madejová*
Affiliation:
Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, SK-845 36 Bratislava, Slovakia
S. Andrejkovičová
Affiliation:
Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, SK-845 36 Bratislava, Slovakia
J. Bujdák
Affiliation:
Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, SK-845 36 Bratislava, Slovakia
A. Čeklovský
Affiliation:
Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, SK-845 36 Bratislava, Slovakia
J. Hrachová
Affiliation:
Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, SK-845 36 Bratislava, Slovakia
J. Valúchová
Affiliation:
Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, SK-845 36 Bratislava, Slovakia
P. Komadel
Affiliation:
Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, SK-845 36 Bratislava, Slovakia
*
*E-mail: uachjmad@savba.sk
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Abstract

This study focused on the structure and physical properties of acid-treated bentonite L45 from the Lieskovec deposit (Slovakia). New applications of near infrared and visible spectroscopies were used to follow Fe-montmorillonite dissolution and layer-charge reduction. Progressive dissolution of L45 results in the formation of a protonated amorphous silica phase. The OH overtone at 7312 cm–1 revealed the creation of Si–OH groups in the mildly treated samples. The area of the Si–O–Moct band, as obtained by a peak-fitting procedure, is a sensitive indicator of the changes in the octahedral sheets. Ultraviolet-visible (UV-VIS) spectroscopy of the smectite dispersions with methylene blue (MB) is an efficient method for controlling the acid activation process of bentonites. The results reveal that acid treatment causes a substantial layer-charge reduction, probably due to prevailing dissolution of MgO4(OH)2 polyhedra in the octahedral sheets. The layer-charge reduction is proportional to the structural changes and to the extent of mineral decomposition upon acid treatment.

Keywords

smectitestructural modificationlayer chargesorption propertiesinfrared spectroscopyVIS spectroscopy
Type
Research Article
Information
Clay Minerals , Volume 42 , Issue 4 , December 2007 , pp. 527 - 540
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2007

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References

Andrejkovičová, S., Madejová, J., Czímerová, A., Galko, I., Dohrmann, R. & Komadel, P. (2006) Characterization of mineralogical and chemical composition of bentonite from Lieskovec, central Slovakia. Geologica Carpathica, 57, 371–378.Google Scholar
Andrejkovičová, S., Janotka, I. & Komadel, P. (2007) Evaluation of geotechnical properties of bentonite from Lieskovec deposit, Slovakia. Applied Clay Science, in press.CrossRefGoogle Scholar
Belver, C., Breen, C., Clegg, F., Fernandes, C.E. & Vicente, M.A. (2005) A variable-temperature diffuse reflectance infrared Fourier transform spectroscopy study of the binding of water and pyridine to the surface of acid-activated metakaolin. Langmuir, 21, 2129–2136.Google Scholar
Bergman, K. & O’Konski, C.T. (1963) A spectroscopic study of methylene blue monomer, dimer and complexes with montmorillonite. Journal of Physical Chemistry, 67, 2169–2177.Google Scholar
Breen, C. & Moronta, A. (1999) Influence of layer charge on the catalytic activity of mildly acid-activated tetramethylammonium-exchanged bentonites. Journal of Physical Chemistry, B103, 2675–2680.Google Scholar
Breen, C., Madejová, J. & Komadel, P. (1995) Characterization of moderately acid-treated, sizefractionated montmorillonites using IR and MAS NMR spectroscopy and thermal analysis. Journal of Materials Chemistry, 5, 469–474.CrossRefGoogle Scholar
Breen, C., Deeba Zahoor, F., Madejová, J. & Komadel, P. (1997) Characterization and catalytic activity of acid-treated, size fractionated smectites. Journal of Physical Chemistry, B101, 5324–5331.Google Scholar
Breen, C., Last, P.M., Taylor, S. & Komadel, P. (2000) Synergic chemical analysis - the coupling of TG with FTIR, MS and GC-MS 2. Catalytic transformation of the gases evolved during the thermal decomposition of HDPE using acid-activated clays. Thermochimica Acta, 363, 93–104.Google Scholar
Bujdák, J. (2006) Effect of the layer charge of clay minerals on optical properties of organic dyes. A review. Applied Clay Science, 34, 58–73.CrossRefGoogle Scholar
Bujdák, J., Janek, M., Madejová, J. & Komadel, P. (1998) Influence of the layer charge density of smectites on the interaction with methylene blue. Journal of the Chemical Society, Faraday Transactions, 94, 3487–3492.Google Scholar
Bujdák, J., Janek, M., Madejová, J. & Komadel, P. (2001) Methylene blue interactions with reduced-charge smectites. Clays and Clay Minerals, 49, 244–254.Google Scholar
Bujdák, J., Iyi, N. & Fujita, T. (2002) The aggregation of methylene blue in montmorillonite dispersions. Clay Minerals, 37, 121–133.Google Scholar
Cenens, J. & Schoonheydt, R.A. (1988) Visible spectroscopy of methylene blue on hectorite, Laponite B and Barasym in aqueous suspensions. Clays and Clay Minerals, 36, 214–224.CrossRefGoogle Scholar
Christidis, G.E. & Kosiari, S. (2003) Decolorization of vegetable oils: A study of the mechanism of adsorption of beta-carotene by an acid-activated bentonite from Cyprus. Clays and Clay Minerals, 51, 327–333.CrossRefGoogle Scholar
Czímerová, A., Jankovič, L’. & Bujdák, J. (2004) Effect of the exchangeable cations on the spectral properties of methylene blue in clay dispersions. Journal of Colloid and Interface Science, 274, 126–132.Google Scholar
Eberl, D.D. (2003) User's guide to RockJock —a program for determining quantitative mineralogy from powder X-ray diffraction data. U.S. Geological Survey, Open-File Report 03-78, 40 pp.Google Scholar
Espantaleon, A.G., Nieto, J.A., Fernandez, M. & Marsal, A. (2003) Use of activated clays in the removal of dyes and surfactants from tannery waste waters. Applied Clay Science, 24, 105–110.Google Scholar
Farmer, V.C. (1974) Layer silicates. Pp. 331–363 in: Infrared Spectra of Minerals (Farmer, V.C., editor). Mineralogical Society, London.Google Scholar
Gates, W.P., Anderson, J.S., Raven, M.D. & Churchman, G.J. (2002a) Mineralogy of a bentonite from Miles, Queensland, Australia and characterization of its acid activation products. Applied Clay Science, 20, 189–197.CrossRefGoogle Scholar
Gates, W.P., Slade, P.G., Manceau, A. & Lanson, B. (2002b) Site occupancies by iron in nontronites. Clays and Clay Minerals, 50, 223–239.Google Scholar
Gillot, F., Righi, D. & Räisänen, L. (2001) Layer-charge evaluation of expandable clays from a chronosequence of podzols in Finland using an alkylammonium method. Clay Minerals, 36, 571–584.Google Scholar
Güven, N. (1992) Molecular aspects of clay water interactions. Pp. 2–79 in: Clay-water Interface and its Rheological Implications (Güven, N. & Pollastro, R.M. editors). CMS workshop lectures, Vol. 4, The Clay Minerals Society, Boulder, Colorado, USA.Google Scholar
Hrobáriková, J. & Komadel, P. (2002) Sorption properties of reduced-charge montmorillonites. Geologica Carpathica, 53, 93–98.Google Scholar
Janek, M., Komadel, P. & Lagaly, G. (1997) Effect of autotransformation on the layer charge of smectites determined by the alkylammonium method. Clay Minerals, 32, 623–632.Google Scholar
Jozefaciuk, G. (2002) Effect of acid and alkali treatments on surface-charge properties of selected minerals. Clays and Clay Minerals, 50, 647–656.Google Scholar
Jozefaciuk, G. & Bowanko, G. (2002) Effect of acid and alkali treatments on surface areas and adsorption energies of selected minerals. Clays and Clay Minerals, 50, 771–783.Google Scholar
Komadel, P., Janek, M., Madejová, J., Weekes, A. & Breen, C. (1997) Acidity and catalytic activity of mildly acid-treated Mg-rich montmorillonite and hectorite. Journal of the Chemical Society, Faraday Transactions, 93, 4207–4210.Google Scholar
Komadel, P. (2003) Chemically modified smectites. Clay Minerals, 38, 127–138.Google Scholar
Komadel, P., Bujdák, J., Madejová, J., Šucha, V. & Elsass, F. (1996) Effect of non-swelling layers on the dissolution of reduced-charge montmorillonite in hydrochloric acid. Clay Minerals, 31, 333–345.Google Scholar
Madejová, J. (2005) Studies of reduced-charge smectites by near infrared spectroscopy. Pp. 169–202 in: The Application of Vibrational Spectroscopy to Clay Minerals and Layered Double Hydroxides (Kloprogge, J.T., editor). CMS Workshop Lectures, Vol. 13. The Clay Minerals Society, Aurora, Boulder, Colorado, USA.Google Scholar
Madejová, J., Bujdák, J., Janek, M. & Komadel, P. (1998) Comparative FT-IR study of structural modifications during acid treatment of dioctahedral smectites and hectorite. Spectrochimica Acta, A54, 1397–1406.Google Scholar
Madejová, J., Kečkéš, J., Pálková, H. & Komadel, P. (2002) Identification of components in smectite/kaolinite mixtures. Clay Minerals, 37, 377–388.Google Scholar
Mendioroz, S., Pajares, J., Benito, I., Pesquera, C., Gonzalez, F. & Blanco, C. (1987) Texture evolution of montmorillonite under progressive acid treatment: Change from H3 to H2 type of hysteresis. Langmuir, 3, 676–681.Google Scholar
Metz, V., Amram, K. & Ganor, J. (2005) Stoichiometry of smectite dissolution reaction. Geochimica et Cosmochimica Acta, 69, 1755–1772.Google Scholar
Morgan, D.A., Shaw, D.B., Sidebottom, M.J., Soon, T.C. & Taylor, R.S. (1985) The function of bleaching earths on the processing of palm, palm kernel and coconut oils. Journal of American Oil Chemists Society, 62, 292–299.Google Scholar
Nguetnkam, J.P., Kamgac, R., Villiéras, F., Ekodeck, G.E., Razafitianamaharavo, A. & Yvon, J. (2005) Assessment of the surface areas of silica and clay in acid-leached clay materials using concepts of adsorption on heterogeneous surfaces. Journal of Colloids and Interface Science, 289, 104–115.Google Scholar
Novák, I. & Číčel, B. (1972) Refinement of surface area determining of clays by ethylene glycol monoethyl ether (EGME) retention. Pp. 123–129 in: Proceedings of the 5th Conference on Clay Mineralogy and Petrology, Praha 1970 (Konta, J., editor), Charles University, Praha.Google Scholar
Pálková, H., Madejová, J. & Righi, D. (2003) Acid dissolution of reduced-charge Li- and Ni-montmorillonites. Clays and Clay Minerals, 51, 133–142.Google Scholar
Petit, S. (2005) Crystal-chemistry of talcs: a NIR and MIR spectroscopic approach. Pp. 41–64 in: The Application of Vibrational Spectroscopy to Clay Minerals and Layered Double Hydroxides (Kloprogge, J.T., editor), CMS Workshop Lectures, Vol. 13, The Clay Minerals Society, Aurora, Colorado, USA.Google Scholar
Petit, S., Decarreau, A., Martin, F. & Buchet, R. (2004) Refined relationship between the position of the fundamental OH stretching and the first overtones for clays. Physics and Chemistry of Minerals, 31, 585–592.Google Scholar
Schoonheydt, R.A. & Heughebaert, L. (1992) Clay adsorbed dyes: methylene blue on laponite. Clay Minerals, 27, 91–100.Google Scholar
Sposito, G. & Prost, R. (1982) Structure of water adsorbed in smectites. Chemical Reviews, 82, 553–573.Google Scholar
Šucha, V., Galko, I., Madejová, J. & Kraus, I. (1996) Mineralogical and crystallochemical characteristics of bentonite from Zvolenská Slatina region (in Slovak). Mineralica Slovaca, 28, 129–134.Google Scholar
Tkáč, I., Komadel, P. & Müller, D. (1994) Acid-treated montmorillonites —a study by 29Si and 27Al MAS NMR. Clay Minerals, 29, 11–19.Google Scholar
Vicente-Rodríguez, M.A., Suárez-Barrios, M., Bañares-Muñoz, M.A. & López-González, J.D. (1996a) Comparative FT-IR study of the removal of octahedral cations and structural modifications during acid treatment of several silicates. Spectrochimica Acta, A52, 1685–1694.Google Scholar
Vicente-Rodríguez, M.A., Suárez-Barrios, M., López-González, J.D. & Bañares-Muñoz, M.A. (1996b) Characterization, surface area, and porosity analyses of the solids obtained by acid leaching of a saponite. Langmuir, 12, 566–572.Google Scholar